Navigator 4WD V8-5.4L DOHC VIN A (2000)
replaced if no apparent damage has occurred.
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Note: The drive belt tensioner arm should rotate freely without binding.
If the drive belt is too long. A drive belt that is too long will allow the drive belt tensioner arm to go all the way to the arm travel stop under certain
load conditions, which will release tension to the drive belt. If the drive belt tensioner indicator is outside the installation wear range window,
replace the drive belt.
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If the drive belt tensioner is worn or damaged.